/Engine/Source/Editor/SequencerCore/Public/TimeToPixel.h
Make this converter relative to the specified time (ie, such that pixel 0 == FrameAmount)
[FTimeToPixel](API\Editor\SequencerCore\FTimeToPixel) RelativeTo ( const [FFrameTime](API\Runtime\Core\Misc\FFrameTime) & FrameZero ) const